//
// @author: Yujie Hao
// @version: 1.000
//
// This program could display the current GMT.

#include <iostream>
//#include <time.h>
#include <ctime>

using namespace std;

int main() {
    time_t timer = time(NULL);

    int second = timer % (60);
    int min = timer / 60 % 60;
    int hr = ( timer / ( 60 * 60 ) ) % 24;

    cout << hr << ":" << min << ":" << second << endl;
    
    //int a = 3, b = 4;
   // b += a + b;
   // cout << b;

    return 0;
}
